Farm circuit interrupter



. Feb. 5, 1929.

1,700,853 K. C. RANDALL ET AL rm cmcun' INTERRUP'I'BR Filed June 17. 1920 3 Sheets-Sheet 1 WITNESSES: .J'W

ATTORNEY Feb. 5, 1929. 1,700,853

K. c. RANDALL ET AL FARII CIRCUIT INTERRUPTER Filed June 17. 1920 3 Sheets-Sheet 2 I ATTORNEY Feb. 5, 1929. 1,700,853

- K. C. RANDALL ET AL FAR! CIRCUIT INTBRRUPTBRJ med June 17. 1920 :s sheets -sheet 3 .WITNESSESI I I INVENTORS f f 4 ATTdRNEY Patented Feb. 5, 1929.

UNITED STATES PATENT OFFICE.

C. RANDALL, O1? EDGEWOOD PARK AND HERMAN K. ANSINGII, GI? MURRAYS- VILLE, PENNSYLVANIA, ASSIGNORS TO \VESTINGHOUSE ELECTRIC & MANUFAC- TUBING COMPANY, A CORPORATION OF PENNSYLVANIA.

FARM CIRCUIT Application filed June 1?,

Our invention relates to electrical protective and circuit-interinpting devices and particularly to such devices as are adapted tor with ,lectrical farm equipment.

One object of our invention is to provide device of the above indicated character that shall be simple and durable in construction, economical. to manufacture and ellcctire in ops-nation.

nether object of our invention is to pro- ,..,e an electrical protective and circuitiuterrupting device that shall com; ise a sub stantially ininimmn number oi parts so formed and relatu'l as to faci it te the installa operations to a substanti ill in num 1e and that shall uire only ordinary tools and ordinary sl'ill at the place of installaticn.

In electrical farm equipment, it is usual to receive power from a relatively high-voltage line. Switches and all other apparatus connected in circuit with higlrvoltage lines must, of course, be not only constructed to withstand electrical stresses but also to withstand the ellects of use, time and weather.

It is essential, particularly in connection with farm equipments where much time and attention would ordinarily be required, that every precaution be taken and every means utilized to simplify and increase the eli'ectiveness ol the apparatus.

ll; is our aim to provide a protective and circuit-iutcrriipting device for farm equipments that shall he of the simplestpossible construction, which means sin'ipl'city oi dcsign, tow parts and the reduction in number o'li spare or replacement parts which it will be necessary to have on hand during;- service clmditions,

To facilitate the erection of the device, we propose that the various groups o'l parts, which must necessarily be disassembled for shipping, .rhal], be so designed and arranged as to eliminate any unnecessary adjusting, cutting or drilling on the erection site.

1t is, also, our aim to have all the parts readily replaceable and, in particular, to have the protective parts, such as fuses and resistors, of very easy access and manipulation. lVith respect to the latter parts, it is desirable that they be adapted for replacement with the area test case and safety because Ofli their usual position of di'fi'icult access on a pole or tower and because of the fact that such re- INTERRUPTER.

1828. Serial. No. 389,581.

{flacements may be Frequent-iv performed bv the farmers th mselves. i i U lnpracticing our invention, we provide a relatively simple metal-frame suppe 3 structure for disposition at the uppc' part of a pole or tower. ()i'di ry i1i-tvpe insulaimrs supporting co nor-lions to the line are providcd with hooded. contact portions brojocti'oli' laterally thereirom. l ubular insulating members, pivoted at points intermediate their ends, carry yieldable Contact members at their upper ends and enclose expulsion fUIOS in circuit with the contact members and the apparatus to be supplied, A hornap lightning arrester and a limiting resistor are supported on the tubuiar insulator and connected to ground through the supporting structure. A relativel long operating arm extends from the device to a position near the base of the pole or tower and is connected, at its lower end, to an operating: handle and a toggle mechaism bv which the contact members may be maintained in their closed positions.

In the accompanying drawings, F i gure 1 is a front elevational view of a protective and circuit-interrupting device embodying our invention. I M

F1 2 is a side elevational view of the same with the contact members engaged.

Fig. 3 is a partial side elevational view' theroot with th '8 contact members disengaged.

liu'. 4 is an enlarged detail, view, ,nrrtiallV in elevation and partially in section, of the upper portion of the device.

Fig 5 is an enlarged detail plan view or? a portion oil the device illustrated in Fig. l.

Figs. (3, 7 and 8 are detail views of portions of the structure, and i Figs. 9, l0 and 11 are views, similar to Figs. 1, and 3 of a modified form of device embo yiug our invention for connecting a selective plurality of service circuits to the line.

A metal-frame structure 1, comprises longritudinal angle members 2, transverse anrrle members 3 and braces 4, suitably seemed, as by a bolt 5, to a pole 6 and has insulators 7 oi the ordinary pin type rigidly StCHl'G-fl thereto. Caps 8 on the insulators 7 are provided with terminal connectors 9 by which they are connected to high-tension lines (not shown) through conductors 10 and are also provided with laterally extending contact members 11 of substantially inverted channel i l :3 portions in which relati thin yieldebl K contact members 20 are secured terminal portions projecting insulators l? and clamping portioi peraoing with clamping memcrs L w iolts 25 to secure one end of each of tubu ar.- i r sulat'ing men'ibers 2t; projecting outivurdl rom the ends ol the insulators l7.

Complementary clamping members 2 28, somewhat similar the members 2.: E l are secured to the outer ends or t re i tors 26. The clamping members a u similarly provided with portions 29 in w lightning-arrester or horn-gap members 30 are supported by bolts 31. Each clampin;

member 27 is provided, at its under side. with a portion 32 of substantially inverted cupshape, for the reception of one end 0" a limiting resistor which extends to, and in, a terminal an of substantially cup-- i disposed at the outer end oi an t tending outwardly and downwardly u clamping member 15.

The portions 32 and 34 are spaceu apart a less distance than the length of the resistor 33 in order that the latter may be securely held in position and, by a simple lifting move ii at against a spring 36 secured in the portion 32, readily placed in position and released.

A sleeve 37, secured to the lo \ver end of the insulating members 1?, pron support for a second line. tern'iinal 33"? at shielding receptacle for a cup mcmbs is attached to the lower end of an cxpuis fuse device 39 having contact members lO at its upper end for engagement Vith the portion Slots ll in the cup member 38 and screws d2 in the sleeve 3'7, as shovvn in 6, constitute a bayonet joint for readily securing and removing the cup HlGHlbGl' and the fuse 39. A compression spring l3, extending between the inner nds of the screws and the bottom of the cup member 38, serves to bind the fuse device 39 in position and assist in the release thereot when the cup mcmber 38 is turned in the sleeve 37.

Helical springs 4e, each coi'inectcd at one end to one of the angle members and, at its other end to the shaft 12, are adapted to act as cushions for the moving parts. when the interrupter is opened, to prevent fracture of 1,7oaeas Vn operating e 1 V m. disposed augacent to U18 lea e1 30ligs 58 for co-op rati the nail die a pin or padloc (no de ice in position.

he re'ation of the ooe ating mechanism is such that, when l1, handle member 55 turned to its upper aosit'on to en 'age the contact me nbers ll and 20, the force in the arm 50, caused by the 1e moving parts, is directed to h ld the handle membe 55 in its upper position.

l v hen it is desired to operate the circuit inter 'upter the ope *ator grasps the handle member 55 and turns it in a clockwise dire"- tion viewed in 2, The movement of the handle member 55 is transmitted thro'u 'h the arm 50 to the bell crank lever '5 and shaft 12. The turni movement transmitted to the shaft 12 causes the insulating memb us 17 to turn in a counterclockwise direction, .vhereupon the resilient contact meinbc s 20 a re drawn out of, ex Hgement with the laterally cr itcuding contact members ll. When it desired to again close the circuit interrupter, the hen le 55 it named in the opposite direction to turn. the resilient contact members 20 in engagement with the stationary contact members 11.

Should an undesired potential, such as is induced by a stroke of lightning or voltage surge, be impressed upon the line conductors 10, arcs are established across the arcing horns 30 which complete circuits from the conductors 10 through the col. ct members 20, the cap members 18, the arc horns 80, the re sisters 33, the arms 35, the metal frame structure 1 and the conductor a to g mind. The circuits ust traced are in parallel relation to the circuits th ough the fuses 39 and the terminals 37 to he customers apparatus.

ge surge has subsided,the arcs established between the arcing horis 30 are ns 54- and 56 of the 99 ports contact members 63 and Gil, respective thereon adal ited to connected in circuit with ditterout service circuits (not shown). The insulator *7 are provided at their lower ei'ids with l and downwardty oroject ng tor selective erm'a enient com 1 with the couta -t inen'ihers G3 and G l.

In this torni of device, 2 stationary contact member 6 of alienate substantially inverted 'l :h :upported on an arm 67' procc L i the upper ends of the insulators '7 and the movable contac neniher 20 is of 1 m 0 have SUHICIQETO 1 rent with the conloop shape and ada l t travel, while still in eng;

tact member 66 to engage both the contact members 63 and shown in 1O 11.

- ot' the opern shown in contact inherGG.

"lhe nior itication shown in 11 p aides 'reater llcxibili't r 7 operation by perrn ot a relatively Sinai winingiol'l'i'liil and a relatively large or for operating larger electrical apparatus.

While re have showi a licular Form of our inve iuioi, he etlertcd thereii without doiiiarting from the spirit and scope thereot as set forth in the appended claims.

We claim our invention l. in an ele trical protective and circuitiuterrupting device, the con'ihination with a supportin structure and a contact nieniher thereon, oi? a nnitar i structure pivoted on the supporting); structire and comprising a ro-oijierating CGIEii'tC; member and a fuse i1 SGI'itfS? circuit relation and lightning arrester and a resistor ii; Qjlsifli'lil circuit reiation.

2. In an electrical protective and circuitinterrupting device, the combination With a stationary contact in changes ma eniher, if a relatively JHOVZ hle co-ope 'ating structure tl'iere'tor comprising a supporting shaft, a tubular insula ing inc-2 her supported intermediate its ends e terminal connector disposed in tl e insulating in inher.

3. in an eletiiical protective and circuit- 'erriuti ie' device the combination with a U iontact n'ieinher, of arelatively trii ire therefor comprising a supinsu ating incin- ,ially at its iniddle on r a contact member at 'her, a terminal ie san a fuse contact member and hawt-operated means he readil" placed in.

iitoin oi? the insulating 1 2d circuitr i: n with a :einher, or a. relatively comprising a I led supper q ineniber an insulating 1 supported on sale support ng incinmember on the u sulating ineni ip nienihcr supported on said i and connected to the niov- F81, a second insulating one the first ins'u ating vecon-d horingap ineinher sup spatcu 1,4 said inst heinp "tion ap n'ieinher on said second insulating nie1n ll-Cl one connected to said uuled support i e auo circuitvice, the coinhi iation with a ct *nenher, oi a relativel :rure ther r conin'ising a 1 1r 'ing inen her, 'an insulating trted said supporting ineninien'iher on the insulating incinnieuiher supported on said i r and connected to the UNIX- -act inen'il'n a second insulating ,iuenihcr project on;

iovaoic neinher att tli uippor structure,

i 2 a contact and a horn-gap nieinher llEUOF-Gtl at on d o; the iDSlliElilllP' ineinber L a 7 a second man e in member disposed at uaid the insulating member and prol substantially right angles there- -tcc 1=nd horn-gap ineinher sec ired to usulatiug n'ieinhcr and an impedextendbetween the second 3* a 1 nhcr and the grounded supportstructure.

7. In a high potential protective and circuitinterrupting device the COll'lbllltttlOll with a piurelity of protective means and contact members, of estructure for supporting and so moving certain of said Contact menibere as to permit the connection of a main line circuit to :1 selection of service circnitn.

8. A liigli-poteritial circnit-interrimti11g glevice COHIPIlSlE a stationary content member of inverted ercuete eubstentiully trough shape an eiongeterl insulating ll'lCiUl)Gl pivitetl intermediate its ends and cerryin 21 PlOtQCLl/C device, :1 contact meinte 5 member yer 1 enrl o: the insulating 1 tion with the stationary contact member, :1

second contact inen'ibe on the ineul k inei'uber and operntivcly connected thru the protective member to the contact in at the other entl of the insulator and 21 p il'llLlity of spaced. stationary contact n'iembers for c operation with said second contact incinrcuit to any one of a )lurolity of the co met members as to permit ti on of one other circu ll-potential protective and cir- (levice, tire combination cane tin-Ll conv or supporting e means; and ceri ll) e to pei'niit the one of :i pluziirough one of the with o plurz tarot members. i

o i r circu': protective nice E2. in :1 hi (tint-interrupt merino tie combination with nurzility of protective means having con not memb rs thereon and a pair of spaced ct -opernt 3 ;y contact men-ibers, ot' structure for oer-ting and moving the n'otective iieenr and the contact n ieinbers mounted thereon 1:5 to permit the connection of the two stationery contact members in se rice with one the protective In testimon Whereot, We have hereunto potential orotective and cirs 'becribect our :1 me; this lth clay of June,

KARL O. RANDALL. HERMAN i. ANSINGl-l. 

